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Wind and Structures
  Volume 14, Number 1, January 2011, pages 71-80
DOI: http://dx.doi.org/10.12989/was.2011.14.1.071
 


Design criteria of wind barriers for traffic. Part 2: decision making process
Dong Hyawn Kim, Soon-Duck Kwon, Il Keun Lee and Byung Wan Jo

 
Abstract
    This study presents a decision making process for installation of wind barrier which is used to reduce the wind speed applied to running vehicles on expressway. To determine whether it is needed to install wind barrier or not, cost and benefit from wind barrier are calculated during lifetime. In obtaining car accidental risk, probabilistic distribution of wind speed, daily traffic volume, mixture ratio in the volume, and duration time for wind speed range are considered. It is recommended to install wind barrier if benefit from the barrier installation exceed construction cost. In the numerical examples, case studies were shown for risk and benefit calculation and main risky regions on Korean highway were all evaluated to identify the number of installation sites.
 
Key Words
    wind barrier; driving stability; side wind; car accident risk.
 
Address
Dong Hyawn Kim: 1Department of Coastal Construction Engineering, Kunsan National University, Kunsan, Chonbuk, 573-701, Korea
Soon-Duck Kwon: Department of Civil Engineering, Chonbuk National University, Chonju, Chonbuk, 561-756, Korea
Il Keun Lee: Expressway & Transportation Research Institute, Korea Expressway Corporation,Hwaseong, Gyeonggi, 445-812, Korea
Byung Wan Jo: Department of Civil and Environmental Engineering, Hanyang University,Seongdong, Seoul, 426-791, Korea
 

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